Take care with removing devices - especially in Non-Plug and Play Drivers and Sound, video and game controllers - as some of these are still used, as well as devices that just aren't connected at present (e.g. USB HDDs). This is where having a good knowledge of your system is important and preferably a screenshot or two of Device Manager (with the above command line variable set) on a clean system with all categories expanded.

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Our primary IT vertical is accounting firms since 1998. From accounting app support through to highly available solutions for accounting firms we've got it covered. I'm a Microsoft MVP since 2009. First on SBS and then starting in 2014 on Cluster.